Java Web Weekly, Issue 151
Last updated: November 21, 2016
Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.
Get started with mocking and improve your application tests using our Mockito guide:
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
Get started with understanding multi-threaded applications with our Java Concurrency guide:
Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:
Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.
But these can also be overused and fall into some common pitfalls.
To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:
Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:
Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.
I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.
You can explore the course here:
Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.
Get started with Spring Data JPA through the guided reference course:
Refactor Java code safely — and automatically — with OpenRewrite.
Refactoring big codebases by hand is slow, risky, and easy to put off. That’s where OpenRewrite comes in. The open-source framework for large-scale, automated code transformations helps teams modernize safely and consistently.
Each month, the creators and maintainers of OpenRewrite at Moderne run live, hands-on training sessions — one for newcomers and one for experienced users. You’ll see how recipes work, how to apply them across projects, and how to modernize code with confidence.
Join the next session, bring your questions, and learn how to automate the kind of work that usually eats your sprint time.
1. Spring and Java
>> What Future Java Might Look Like [sitepoint.com]
The plans for Java beyond version 9 are very interesting and clearly quite ambitious. Some huge features in the works.
>> Another post-processor for Spring Boot [frankel.ch]
Some fun digging into internal of Spring (and Spring Boot), going beyond using the framework and towards actually understanding it.
>> Spring Kafka Producer/Consumer sample [java-allandsundry.com]
Clean and to the point examples introducing Spring Kafka.
>> (J)Unit Testing Principles [codecentric.de]
Quick post going over some of the foundations of unit testing. This is not ground-breaking stuff, but these are exactly the things that are so often overlooked.
Also worth reading:
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>> The Road to Javaslang 3.0 [infoq.com]
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>> Generational Disparity in Garbage Collection [sitepoint.com]
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>> The print version of High-Performance Java Persistence [vladmihalcea.com]
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>> Meet Julien Dubois and JHipster [in.relation.to]
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>> Work with Parallel Database Streams using Custom Thread Pools [minborgsjavapot.com]
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>> Serializing POJOs With Custom Content-Type In JAX-RS 2.x [adam-bien.com]
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>> 779,236 Java Logging Statements, 1,313 GitHub Repositories: ERROR, WARN or FATAL? [takipi.com]
Webinars and presentations:
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>> To Spring Security 4.1 and beyond [infoq.com]
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>> CQRS and Event Sourcing with Jakub Pilimon [spring.io]
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>> Micro-Benchmarking in Java [infoq.com]
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>> Netflix’s Edge Gateway Using Zuul [infoq.com]
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>> From Imperative To Reactive Web Apps [spring.io]
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>> Intro to Spring Boot [infoq.com]
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>> Spring Tips: Spring Cloud Data Flow [spring.io]
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>> Vaadin Spring 1.1 – build web UIs that hook right to your Java backend [spring.io]
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>> DDD & REST – Domain Driven APIs for the web [spring.io]
Time to upgrade:
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>> Spring IO Platform Athens-SR1 [spring.io]
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>> Hibernate Validator 5.3.2.Final is out [in.relation.to]
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>> IntelliJ IDEA 2016.3 RC: Frameworks, Application Servers and Clouds [jetbrains.com]
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>> Spring Cloud Data Flow 1.1 RC1 Released [spring.io]
2. Technical
>> ValueObject [martinfowler.com]
Getting back to basics, especially on things we think we understand, is almost always a good idea.
These concepts are foundational for a reason – we build everything else on top of them, so it’s well worth having clarity when we look at the building blocks of our work.
>> How to run Continuous Integration on EC2 without breaking the bank [giorgiosironi.com]
A solid guide to setting up a CI pipeline on EC2 in a way that makes economical sense. Lots of good stuff here, especially as you scale.
>> Most popular relational databases – 2016 edition [plumbr.eu]
This kind of field data is always interesting to give us a sense of what the overall market looks like.
>> Continuous Delivery Patterns: Building your application inside a Docker container [codecentric.de]
The way we’re building a CD pipeline now has certainly changed from the way we used to do it just a few years ago. And Docker was certainly a big part of data, along with the newer DSLs in Jenkins.
Also worth reading:
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>> Health Check of Docker Containers [couchbase.com]
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>> EC2 Price Reduction (C4, M4, and T2 Instances) [aws.amazon.com]
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>> Disqus’ mixed content problem and fixing it with a CSP [troyhunt.com]
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>> Going “Events-First” for Microservices with Event Storming and DDD [russmiles.com]
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>> Java Performance Monitoring: 5 Open Source Tools You Should Know [takipi.com]
3. Musings
>> How to be productive (as a developer) [sebastian-daschner.com]
Lots of good advice here on how to get productive as a developer. “Throw away the mouse” is hard to follow, fantastic advice.
>> Resolving Conflict [queue.acm.org]
Conflict is one of those things you’d rather not worry about.
But, as I’m growing a team, that’s not really an option – so it’s worth giving it some real though and having an intelligent approach to dealing with it (rather than a gut reaction).
>> How to Deliver Software Projects on Time [daedtech.com]
There’s a question that doesn’t have a simple answer. Which of course doesn’t mean we should stop trying to get better at the process.
Also worth reading:
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>> Spice up your Analytics: Amazon QuickSight Now Generally Available in N. Virginia, Oregon, and Ireland [allthingsdistributed.com]
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>> Offshoring roulette: lessons from outsourcing to India, China and the Philippines [troyhunt.com]
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>> On metadata [lemire.me]
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>> On writing and publishing my first ebook [ontestautomation.com]
4. Comics
And my favorite Dilberts of the week:
